一个1000英尺(300米)的再循环水系统，并且其配管的直径一致，则需要25小时的经过滤的再循环来去除总微粒。
A recirculating water system of 1000 feet (300 meters) with a consistent tube diameter would require as much as 25 hours of filtered recirculation time for total particle removal.
一个1000英尺(300米)的再循环水系统，并且其配管的直径一致，则需要25小时的经过滤的再循环来去除总微粒。
A recirculating water system of 1000 feet (300 meters) with a consistent tube diameter would require as much as 25 hours of filtered recirculation time for total particle removal.
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